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diazo process

American  

noun

Photography.

  1. a method for printing on paper treated with a diazo compound that disintegrates upon exposure to light and developing the unexposed areas by the use of diazo dyes.

Etymology

Origin of diazo process

First recorded in 1945–50

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.